SS:=IF(CREF(C,1) AND REF(C,1)=REF(C,2),1,IF(CREF(C,1) AND REF(C,1)=REF(C,2),-1,IF(CREF(C,2) AND REF(C,2)REF(C,1),2,IF(CREF(C,2) AND REF(C,2)REF(C,1),-2,0))));
SM:=IF(REF(SS,1)0 OR REF(SS,1)0,REF(SS,1),IF(REF(SS,2)0 OR REF(SS,2)0,REF(SS,2),IF(REF(SS,3)0 OR REF(SS,3)0,REF(SS,3),IF(REF(SS,5)0 OR REF(SS,5)0,REF(SS,5),IF(REF(SS,6)0 OR REF(SS,6)0,REF(SS,6),IF(REF(SS,7)0 OR REF(SS,7)0,REF(SS,7),0))))));